Posts tagged: Security

CAPTCHA - Protect Forms from Web Spam Bots

CAPTCHA , Completely Automated Public Turing test to tell Computers and Humans Apart, is a web security technique to protect HTML forms from web spammers. CAPTCHA dynamically generates security codes for sign-up, subscription submission or checkout forms to make sure that forms are not submitted by spam bots. Because the generated password on a distorted image is a part of the image, users can't copy and paste it. This way, it verifies that it's an actual human that submits a form, not any kind of automated software including spambots. The security codes that CAPTCHA generates are usually a combination of letters or ...